Make it possible to have 1 PpapiGlobals per thread. Update unit tests.

ppapi/shared_impl/test_globals.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PPAPI_SHARED_IMPL_TEST_GLOBALS_H_
 #define PPAPI_SHARED_IMPL_TEST_GLOBALS_H_
 
 #include "base/compiler_specific.h"
 #include "ppapi/shared_impl/callback_tracker.h"
 #include "ppapi/shared_impl/ppapi_globals.h"
+#include "ppapi/shared_impl/ppapi_shared_export.h"
 #include "ppapi/shared_impl/resource_tracker.h"
 #include "ppapi/shared_impl/var_tracker.h"
 
 namespace ppapi {
 
-class TestVarTracker : public VarTracker {
+class PPAPI_SHARED_EXPORT TestVarTracker : public VarTracker {
  public:
   TestVarTracker() {}
   virtual ~TestVarTracker() {}
   virtual ArrayBufferVar* CreateArrayBuffer(uint32 size_in_bytes) OVERRIDE {
     return NULL;
   }
 };
 
 // Implementation of PpapiGlobals for tests that don't need either the host- or
 // plugin-specific implementations.
-class TestGlobals : public PpapiGlobals {
+class PPAPI_SHARED_EXPORT TestGlobals : public PpapiGlobals {
  public:
   TestGlobals();
   virtual ~TestGlobals();
 
   // PpapiGlobals implementation.
   virtual ResourceTracker* GetResourceTracker() OVERRIDE;
   virtual VarTracker* GetVarTracker() OVERRIDE;
   virtual CallbackTracker* GetCallbackTrackerForInstance(
       PP_Instance instance) OVERRIDE;
   virtual FunctionGroupBase* GetFunctionAPI(PP_Instance inst,
                                             ApiID id) OVERRIDE;
   virtual PP_Module GetModuleForInstance(PP_Instance instance) OVERRIDE;
 
  private:
   ResourceTracker resource_tracker_;
   TestVarTracker var_tracker_;
   scoped_refptr<CallbackTracker> callback_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(TestGlobals);
 };
 
 }  // namespace ppapi
 
 #endif   // PPAPI_SHARED_IMPL_TEST_GLOBALS_H_